package mn.idax.exchange.otc.util;

import org.apache.http.*;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.protocol.HTTP;
import org.apache.http.util.EntityUtils;
import org.apache.log4j.Logger;

import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSocketFactory;
import javax.net.ssl.TrustManager;
import java.io.*;
import java.net.InetSocketAddress;
import java.net.Proxy;
import java.net.URI;
import java.net.URL;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Map;


/**
 * http请求工具类
 *
 * @author .jension
 */
public class HttpClientUtil {

    private static Logger logger = Logger.getLogger(HttpClientUtil.class);

    /**
     * 处理https GET/POST请求
     * 请求地址、请求方法、参数
     **/
    public static String httpsRequest(String requestUrl, String requestMethod, String outputStr) {
        StringBuffer buffer = null;
        try {
            //创建SSLContext
            SSLContext sslContext = SSLContext.getInstance("TLS");
            TrustManager[] tm = {new MyX509TrustManager()};
            //初始化
            sslContext.init(null, tm, new java.security.SecureRandom());
            //获取SSLSocketFactory对象
            SSLSocketFactory ssf = sslContext.getSocketFactory();
            // TODO 提交时记住关闭代理
//            Proxy proxy = new Proxy(java.net.Proxy.Type.HTTP, new InetSocketAddress("127.0.0.1", Integer.valueOf("1080")));
//            URL url = new URL(requestUrl);
//            HttpsURLConnection conn = (HttpsURLConnection) url.openConnection(proxy);
            URL url = new URL(requestUrl);
            HttpsURLConnection conn = (HttpsURLConnection) url.openConnection();
            conn.setRequestProperty("User-Agent","Mozilla/5.0 ( compatible ) ");
            conn.setRequestProperty("Accept","*/*");
            conn.setDoOutput(false);
            conn.setDoInput(true);
            conn.setUseCaches(false);
            conn.setConnectTimeout(3000);
            conn.setReadTimeout(3000);
            conn.setRequestMethod(requestMethod);
            //设置当前实例使用的SSLSocketFactory
            conn.setSSLSocketFactory(ssf);
            conn.connect();
            //往服务器端写内容
            if (null != outputStr) {
                OutputStream os = conn.getOutputStream();
                os.write(outputStr.getBytes("utf-8"));
                os.close();
            }

            //读取服务器端返回的内容
            int responseCode = conn.getResponseCode();
            InputStream inputStream = null;
            if (responseCode == 200) {
                inputStream = new BufferedInputStream(conn.getInputStream());
            } else {
                // 访问不通再次确认访问
                logger.warn("responseExchangeApiFail url " + requestUrl + ",outputStr " + outputStr);
//               return httpsRequest(requestUrl, requestMethod, outputStr);
               return "";
            }

            InputStreamReader isr = new InputStreamReader(inputStream, "utf-8");
            BufferedReader br = new BufferedReader(isr);
            buffer = new StringBuffer();
            String line = null;
            while ((line = br.readLine()) != null) {
                buffer.append(line);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null != buffer ? buffer.toString() : "{}";
    }


    /**
     * get请求
     *
     * @return
     */
    public static String doGet(String url) {
        try {
            HttpClient client = new DefaultHttpClient();
            //发送get请求
            HttpGet request = new HttpGet(url);
            HttpResponse response = client.execute(request);

            /**请求发送成功，并得到响应**/
            if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {
                /**读取服务器返回过来的json字符串数据**/
                String strResult = EntityUtils.toString(response.getEntity());
                return strResult;
            }
        } catch (IOException e) {
            e.printStackTrace();
            LogUtils.error(HttpClientUtil.class,"doGet error", e);
        }

        return null;
    }

    /**
     * post请求(用于key-value格式的参数)
     *
     * @param url
     * @param params
     * @return
     */
    public static String doPost(String url, Map params) {

        BufferedReader in = null;
        try {
            // 定义HttpClient
            HttpClient client = new DefaultHttpClient();
            // 实例化HTTP方法
            HttpPost request = new HttpPost();
            request.setURI(new URI(url));

            //设置参数
            List<NameValuePair> nvps = new ArrayList<NameValuePair>();
            for (Iterator iter = params.keySet().iterator(); iter.hasNext(); ) {
                String name = (String) iter.next();
                String value = String.valueOf(params.get(name));
                nvps.add(new BasicNameValuePair(name, value));

                //System.out.println(name +"-"+value);
            }
            request.setEntity(new UrlEncodedFormEntity(nvps, HTTP.UTF_8));

            HttpResponse response = client.execute(request);
            int code = response.getStatusLine().getStatusCode();
            if (code == 200) {    //请求成功
                in = new BufferedReader(new InputStreamReader(response.getEntity()
                        .getContent(), "utf-8"));
                StringBuffer sb = new StringBuffer("");
                String line = "";
                String NL = System.getProperty("line.separator");
                while ((line = in.readLine()) != null) {
                    sb.append(line + NL);
                }

                in.close();

                return sb.toString();
            } else {    //
                System.out.println("状态码：" + code);
                return null;
            }
        } catch (Exception e) {
            e.printStackTrace();
            LogUtils.error(HttpClientUtil.class,"doGet doPost", e);
            return null;
        }
    }

    /**
     * post请求（用于请求json格式的参数）
     *
     * @param url
     * @param params
     * @return
     */
    public static String doPost(String url, String params) throws Exception {

        CloseableHttpClient httpclient = HttpClients.createDefault();
        HttpPost httpPost = new HttpPost(url);// 创建httpPost
        httpPost.setHeader("Accept", "application/json");
        httpPost.setHeader("Content-Type", "application/json");
        String charSet = "UTF-8";
        StringEntity entity = new StringEntity(params, charSet);
        httpPost.setEntity(entity);
        CloseableHttpResponse response = null;

        try {
            response = httpclient.execute(httpPost);
            StatusLine status = response.getStatusLine();
            int state = status.getStatusCode();
            if (state == HttpStatus.SC_OK) {
                HttpEntity responseEntity = response.getEntity();
                String jsonString = EntityUtils.toString(responseEntity);
                return jsonString;
            } else {
                logger.error("请求返回:" + state + "(" + url + ")");
            }
        } catch (Exception e){
            LogUtils.error(HttpClientUtil.class,"doGet doPost", e);
        }finally {
            if (response != null) {
                try {
                    response.close();
                } catch (IOException e) {
                    e.printStackTrace();
                    LogUtils.error(HttpClientUtil.class,"doGet doPost", e);
                }
            }
            try {
                httpclient.close();
            } catch (IOException e) {
                e.printStackTrace();
                LogUtils.error(HttpClientUtil.class,"doGet doPost", e);
            }
        }
        return null;
    }

    public static void main(String[] args) {
//        System.out.println(OkHttpClientUtils.get("https://www.bitstamp.net/api/v2/ticker/BTCUSD/", null, new TypeReference<Map>() {
//        }));
        System.out.println(HttpClientUtil.httpsRequest("https://api.bitfinex.com/v1/pjjjjbticker/ETHUSD", "GET", null));
    }
}
